Keyless SUZUKI SX4 2006 1.G Service Manual Online

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-7
Keyless Start Control Module Reception Data
Schematic and Routing Diagram
Keyless Start System Electric Wiring Circuit DiagramS6RW0DA502001
Vehicle speed signal
ECM-keyless start control module code
Door switch status
Door lock status
Charging system signal
Engine oil pressure switch signalECM BCM
DATA
ReceiveKeyless Start
Control Module
I5RW0CA50001-02
BLK/ORNG16-9
G16-15
G16-14
G16-37G16-33
G16-16
G16-20G16-29G16-30
G16-36
G16-32
G16-10
G16-34
G16-11BLU/WHT
WHT/RED
WHT/RED
PNK/BLKGRY/BLU
BLU/RED
YEL
PPL
RED/BLK
5V5V 5V5V
5V5V
5V12V 12V
G16-2G16-1BLU
ORNWHTREDWHTREDG16-18G16-19
BLU/YEL
ORN
G16-24G16-23
BLK/YEL WHT/BLU
G16-7
GRN/WHTLT GRNG16-8
G16-5G16-6
GRN WHT/BLK
G16-4G16-3 WHT/GRN
RED/BLU
BLK/YELBRN/YELBRNG146-3
G146-1
G146-2G146-5
G146-4
G146-6
G146-7G146-8
WHT/RED
WHT/RED
G16[A]
1 2 3 4 5 6 7 8 9 10 11 14 15 16
36 34 33 32 30 29 24 23 37 18 19 20
WHTRED
WHT
WHT
RED
RED
WHTRED
6
7
8
9
10
11
12
13
14
15118
21
21
2
3
5
419
20
16
17
22
WHTRED
WHTREDWHTRED
18 1920WHTRED
WHTRED
21
[B][C]
I6RW0DA50002-01
[A]: Keyless start control module connector (viewed
from harness side)7. Passenger side door antenna 16. Combination meter
[B]: Junction block with BCM type 8. Rear end door antenna 17. Key indicator light
[C]: Junction block without BCM type 9. Center antenna 18. BCM
1. Keyless start control module 10. Luggage room antenna 19. ECM
2. Steering Lock unit 11. Driver side door request switch 20. ABS control module
3. Steering lock solenoid 12. Passenger side door request switch 21. CAN junction connector

Downloaded from www.Manualslib.com manuals search engine 10E-8 Keyless Start System:
Diagnostic Information and Procedures
Precautions in Diagnosing TroublesS6RW0DA504001
• The keyless start system executes data transmission/
reception by means of the radio wave. Therefore,
proper operation may not be obtained if use of the
door lock function and engine start function of the
keyless start system is attempted near the place
where strong radio wave is emitted (TV and radio
broadcasting stations, etc.).
• Diagnostic information stored in keyless start control
module memory can be checked only by key indicator
light.
• Be sure to use the trouble diagnosis procedure as
described in “Keyless Start System Check”. Failure to
follow it may result in incorrect diagnosis. (Some other
DTC may be stored by mistake in the memory of
keyless start control module during inspection.)
• Be sure to read“Precautions for Electrical Circuit
Service in Section 00” before inspection and observe
what is written there.
• Communication of ECM, TCM (A/T model), BCM,
ABS control module, 4WD control module (if
equipped), keyless start control module and
combination meter is established by CAN (Controller
Area Network). (For detail of CAN communication for
keyless start control module, refer to “CAN
Communication System Description”). Therefore,
handle CAN communication line with care referring to
“Precaution for CAN Communication System in
Section 00”.
• Replacement of the keyless start control module
When keyless start control module is replaced with
new one, make sure that register remote controller ID
code to keyless start control module correctly
according to “Registration Procedure for Remote
Controller ID Code”.• Keyless start control module substitution
When the keyless start control module used in
another vehicle was installed in the vehicle being
serviced, register the ID code of the remote controller
to the keyless start control module first and then the
following code.
– With immobilizer control system, register the
ignition key transponder code for the immobilizer
control system in ECM. For registration procedure
of that, refer to “Registration of the Ignition Key in
Section 10C”.
– Without immobilizer control system, register the
steering lock unit ID code in keyless start control
module. For registration procedure of that, refer to
“Keyless Start Registration”.
Self-Diagnosis FunctionS6RW0DA504002
The keyless start control module has self-diagnosis
function to monitor the system components and circuits
while the keyless start system is at work. When the
keyless start control module detects an abnormality in
the system, it saves the area where such abnormality
has occurred as a DTC in its memory. The DTC stored in
memory of the keyless start control module is indicated
by the key indicator light in the combination meter
flashing in a specific pattern. For DTC indication, refer to
“DTC Check” and for the clearing procedure, to “DTC
Clearance”.
Keyless Start System Diagnosis IntroductionS6RW0DA504003
To ensure that the trouble diagnosis is done accurately
and smoothly, observe “Precautions in Diagnosing
Troubles” and follow “Keyless Start System Check”.
4. Ignition knob switch 13. Rear end door request switch 22. Ignition Switch
5. Key reminder switch 14. Driver side door lock switch
6. Driver side door antenna 15. Passenger side door lock switch

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-9
Keyless Start System CheckS6RW0DA504004
Step Action Yes No
1 1) Record details of the problem. For your record, use of a
questionnaire form will facilitate collecting information for
proper analysis and diagnosis.
2) Check if the problem described in “Customer
Questionnaire (Example)” actually occurs in the vehicle.
(This step should be performed with the customer if
possible.)
Perform “Keyless Start System Operation Inspection”
procedure to check if the symptom which has occurred is
abnormal or not.
3) Check for DTC referring to “DTC Check”, and then
record DTC(s).
4) Clear DTC referring to “DTC Clearance” if any DTC
exists, and then recheck for DTC.
Is any DTC still detected?Go to Step 2. Go to Step 3.
2 1) Check and repair referring to applicable “DTC Table”.
Are check and repair complete?Go to Step 5. Check and repair
malfunction part(s), and
go to Step 5.
3 1) Inspect and repair basic parts referring to “Keyless Start
System Symptom Diagnosis”.
Is there faulty condition?Repair or replace
malfunction part(s), and
go to Step 5.Go to Step 4.
4 1) Check for intermittent problems referring to “Intermittent
and Poor Connection Inspection in Section 00”.
Is there any faulty condition?Repair or replace
malfunction part(s), and
go to Step 5.Go to Step 5.
5 1) Confirm if the problem is solved and the keyless start
system is free from any abnormal conditions. If what has
been repaired is related to the DTC, clear the DTC once
and then confirm that no DTC is indicated.
Is there any problem symptom, DTC or abnormal condition?Go to 2) of Step 1 and
perform trouble
diagnosis again.End.

Downloaded from www.Manualslib.com manuals search engine 10E-10 Keyless Start System:
Customer Questionnaire (Example)S6RW0DA504005
Key Indicator Light CheckS6RW0DA504006
Push the ignition knob switch (2) of the steering lock unit
(1) and check that the key indicator light (3) in the
combination meter lights up in red or blue. If it does not
light, go to “Key Indicator Light Circuit Check (Key
Indicator Light Doesn’t Light when Ignition Knob Switch
is Pushed)”.
Customers name:
Model:
VIN:

Date of issue:
Date Reg:
Date of problem:
Mileage:

Problem Symptoms
Engine can not be started by turning Ignition knob
switch
All doors can not be locked / unlocked by all of
request switches
Other
Frequency of Occurrence Continuous / Intermittent ( times a day, a month)
/ Other

Environmental Condition
Weather:
Fine / Cloudy / Rain / Snow / Other

Temperature: (F )
Stopping near area where intense radio waves are
emitted such as TV station, radio station, etc.
Yes / No
Diagnostic Trouble Code
First check:
Normal code / malfunction code ( )
Second check:
Normal code / malfunction code ( )
I4RS0BA50007-03
3
1
2
I4RS0BA50008-01

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-11
DTC CheckS6RW0DA504007
1) Check to make sure that all doors are closed.
2) Open driver side door window glass and door.
3) Check to make sure that ignition key is not inserted
in ignition key cylinder. If it is, remove it.
4) Perform “Key Indicator Light Check”.
5) Close driver side door and within 15 seconds after
that, perform Steps a) through e) described below.
a) Insert ignition key (1) in ignition key cylinder (2).
b) Remove ignition key from ignition key cylinder.
c) Repeat Steps a) and b) twice.
d) Insert ignition key in ignition key cylinder.
e) Push driver side door request switch (3) 4 times.
At the end of Step e), buzzer sounds 4 times to
inform that trouble diagnosis mode has started.6) Read flashing pattern of key indicator light (1) which
represents DTC as shown in example below and
write it down. When more than 2 DTCs are stored in
memory, flashing for each DTC is repeated three
times starting with the smallest DTC number in
increasing order.
NOTE
Go to “No DTC Detection After Performing
DTC Check” in case that any DTC is detected
after performing the procedure mentioned
above.

7) After completing the check, remove ignition key from
ignition key cylinder.
2
1
3
I4RS0BA50009-02
[A]: DTC No. 12 (Normal) a: 0.3 seconds
[B]: DTC No. 52 b: 1.0 second
H: Key indicator light turned ON c: 3.0 seconds
L: Key indicator light turned OFF
bc a a
[A]
H
L
H
L [B]
52
bac a 2 11baa2
1
I4RS0BA50010-02

Downloaded from www.Manualslib.com manuals search engine 10E-12 Keyless Start System:
DTC TableS6RW0DA504008
DTC ClearanceS6RW0DA504009
1) Perform Steps 1) through 5) of DTC check procedure
and have DTC indicated.
2) Open driver side door.
3) Close driver side door and within 10 seconds after
that, perform Steps a) to c) described below.
a) Push unlock side (3) of driver side manual door
lock switch (1).
b) Push lock side (2) of driver side manual door
lock switch.
c) Repeat Steps a) and b) 3 times.
At the end of Step c), DTCs are cleared and key
indicator light indicates DTC No. 12 (Normal).
4) After completing DTC clearance, remove ignition key
from ignition key cylinder. DTC (Flashing pattern
of key indicator light)Detected parts item Detecting condition
) 11Communication Error with Steering
Lock UnitNo communication is available between keyless
start control module and steering lock unit
12 — Normal (No malfunction DTC is detected)
) 13Release Signal Error from Steering
Lock UnitAlthough lock release signal is output to steering
lock unit, it is not inputted from steering lock unit
) 14Steering Lock Unit Malfunction Steering lock unit cannot be unlocked due to its
temperature rise
) 21Internal Error in Keyless Start Control
Module (EEPROM Reading Error)Data cannot be read from memory in keyless start
control module
) 22Internal Error in Keyless Start Control
Module (EEPROM Writing Error)Data cannot be written into memory in keyless start
control module
) 31Lost Communication with BCM Keyless start control module cannot receive data
sent by CAN from BCM
) 33Control Module Communication Bus
OffNo communication is available with all control
modules connected by CAN
) 51Driver Side Door Request Switch
MalfunctionInput signal from driver side door request switch
remains ON, unchanged
) 52Passenger Side Door Request Switch
MalfunctionInput signal from passenger side door request
switch remains ON, unchanged
) 53Rear End Door Request Switch
MalfunctionInput signal from rear end door request switch
remains ON, unchanged
1
32
I4RS0BA50011-02

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-13
Keyless Start System Symptom DiagnosisS6RW0DA504010
Door Lock Function of Keyless Start System
NOTE
Before performing trouble diagnosis procedure for door lock function of keyless start system, check
that power door lock system operates properly referring to “Power Door Lock System Operation
Inspection (If Equipped) in Section 9F”. If power door lock system does not operate properly, go to
“Power Door Lock System Symptom Diagnosis (If Equipped) in Section 9F”.

Keyless Engine Start Function
NOTE
Before performing symptom diagnosis procedure for keyless engine start system, check that engine
starts by using ignition key. If it cannot be started by using ignition key, go to “Engine Symptom
Diagnosis in Section 1A”.

Condition Possible cause Correction / Reference Item
All doors can not be
locked / unlocked by all of
door request switchesCircuit fuse(s) blownReplace fuse(s) and check for short circuit.
Remote controller battery deadReplace battery.
Remote controller faultyCheck remote controller for operation referring
to “Remote Controller Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
BCM faultyCheck input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
All doors can not be
locked / unlocked by any
one of door request
switchRequest switch faultyCheck request switch for operation referring to
“Front Door (Driver and Passenger Side), Rear
End Door Request Switch Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
BCM faultyCheck input and output signal of BCM referring
to “Inspection of BCM and Its Circuits in
Section 10B”.
Condition Possible cause Correction / Reference Item
Engine can not be started
by turning Ignition knob
switchCircuit fuse(s) blownReplace fuse(s) and check for short circuit.
Remote controller battery deadReplace battery.
Remote controller faultyCheck remote controller for operation referring
to “Remote Controller Inspection”.
Steering lock unit faultyCheck steering lock unit for operation referring
to “Steering Lock Unit Inspection”.
Wiring or grounding faultyRepair circuit.
Antennas or keyless start control
module faultyCheck input and output signals of keyless start
control module referring to “Inspection of
Keyless Start Control Module and Its Circuits”.
ECM faultyCheck input and output signal of ECM referring
to “Inspection of ECM and Its Circuits in
Section 1A”.

Downloaded from www.Manualslib.com manuals search engine 10E-14 Keyless Start System:
Keyless Start System Operation InspectionS6RW0DA504011
Keyless Engine Start Operation
1) Sit in driver seat with remote controller carried with
you.
2) Check that all doors are closed and ignition key is
not inserted in ignition key cylinder.
3) While pushing ignition knob switch (1) of steering
lock unit, check if ignition knob switch can be turned
from its lock position.
If key indicator light (2) in combination meter lights in
blue and ignition knob switch can be turned from its
lock position in this check, keyless engine start
operation is in good condition.
If key indicator light in combination meter lights in red
and ignition knob switch cannot be turned from its
lock position in this check, go to “Keyless Start
System Check”.
NOTE
Pushing ignition knob switch for 5 seconds
or longer causes function to protect steering
lock releasing solenoid against heat to work.
Then steering lock unit stops energizing
solenoid, preventing ignition knob switch
from turning. At the same time, key indicator
light in combination meter turns off. In such
case, take your hand off from ignition knob
switch once and operate it again.

Door Lock Operation (Keyless Start System)S6RW0DA504012
1) Check that all door locks are released and all doors
are closed.
2) With remote controller of which ID code is registered
in keyless start control module carried with yourself,
check that pushing driver door request switch once
locks all doors.
3) Check that pushing request switch of driver door,
passenger door or rear end door once releases
corresponding door lock.
4) Check that pushing again request switch pushed in
Step 3) releases all door locks.
NOTE
If door of which request switch has been
pushed is opened/closed before performing
Step 4), all door locks will not be released
even when Step 4) is performed. If Step 4) is
performed after door is opened/closed, only
the door of which request switch was pushed
will be locked.

Inspection of Keyless Start Control Module and
Its Circuits
S6RW0DA504013
Keyless start control module and its circuits can be
checked at keyless start control module wiring couplers
by measuring voltage and resistance.
CAUTION!
Keyless start control module cannot be
checked by itself. It is strictly prohibited to
connect voltmeter or ohmmeter to keyless
start control module with coupler
disconnected from it.

1 2
I4RS0BA50012-01
I4RS0BA50013-01

Downloaded from www.Manualslib.com manuals search engine Keyless Start System: 10E-15
Voltage Check
1) Disconnect negative cable (–) at battery.
2) Remove keyless start control module from vehicle body referring to “Keyless Start Control Module Removal and
Installation”.
3) Connect connector to keyless start control module.
4) Check voltage at each terminal number of couplers connected.
NOTE
• As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when
ignition switch is ON.
• Voltage with asterisk (*) cannot be measured by voltmeter because it is pulse signal.

1 2 3 4 5 6 7 8 9 10 11 14 15 16
36 34 33 32 31 30 29 24 23 37 18 19 20
[A]
I5RW0AA50008-03
[A]: Keyless start control module connector (viewed from harness side)
Terminal
NumberCircuitNormal
Vo l ta g eCondition
G16-1 Driver side door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-2 Driver side door antenna (+)
G16-3 Rear end door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-4 Rear end door antenna (+)
G16-5 Center antenna (–) *–2 – 2 V
Refer to “Reference waveform No. 2: ”
G16-6 Center antenna (+) *–10 – 15 V
G16-7 Luggage room antenna (–) *–10 – 10 V
Refer to “Reference waveform No. 3: ”
G16-8 Luggage room antenna (+) *–8 – 14 V
G16-9 Ground for keyless start control module 0 – 1 V Ignition switch is at all positions
G16-10 Power source 10 – 12 V Ignition switch is at all positions
G16-11 Ignition switch (ACC signal)10 – 12 V Ignition switch is at ACC or ON position
0 – 1 VIgnition switch is at any position other than
ACC or ON position
G16-12 — — —
G16-13 — — —
G16-14 Ignition switch (key reminder signal)10 – 12 V Insert ignition key to ignition key cylinder
0 – 1 V Pull out ignition key from ignition key cylinder
G16-15 Ignition switch (ON signal)10 – 12 V Ignition switch is at ON position
0 – 1 VIgnition switch is at any position other than ON
position
G16-16 Driver side door request switch10 – 12 V Request switch of driver side door is released
0 – 1 V Request switch of driver side door is pushed
G16-17 — — —

Downloaded from www.Manualslib.com manuals search engine 10E-16 Keyless Start System:
G16-18 CAN communication line (low) *1.6 – 2.5 V
Refer to “Reference waveform No. 4: ”
G16-19 CAN communication line (high) *2.5 – 3.6 V
G16-20 Power supply for steering lock unit 4 – 6 V Full time
G16-21 — — —
G16-22 — — —
G16-23 Passenger side door antenna (–)
*0 – 5 V Refer to “Reference waveform No. 1: ”
G16-24 Passenger side door antenna (+)
G16-25 — — —
G16-26 — — —
G16-27 — — —
G16-28 — — —
G16-29 Signal for steering lock unit4 – 6 VIgnition knob switch is at any position other
than ON and OFF position
*0 – 5 V Refer to “Reference waveform No. 5: ”
G16-30 Ground for steering lock unit 0 – 1 V Full time
G16-31 — — —
G16-32 Rear end door request switch10 – 12 V Request switch of rear end door is released
0 – 1 V Request switch of rear end door is pushed
G16-33 Driver side door lock switch0 – 1 VDriver side door is at unlock position and
passenger side door is at lock position
4 – 6 VDriver and passenger side door is at lock
position
*3 – 5 V Refer to “Reference waveform No. 6: ”
G16-34 Ignition knob switch10 – 12 VWhen pushing ignition knob switch of steering
lock unit
0 – 1 VWhen releasing ignition knob switch of
steering lock unit
G16-35 — — —
G16-36 Passenger side door request switch10 – 12 VRequest switch of passenger side door is
released
0 – 1 VRequest switch of passenger side door is
pushed
G16-37 Passenger side door lock switch0 – 1 VPassenger side door is at unlock position and
driver side door is at lock position
4 – 6 VDriver and passenger side door is at lock
position
*3 – 5 V Refer to “Reference waveform No. 6: ”
G16-38 — — —
G16-39 — — —
G16-40 — — — Terminal
NumberCircuitNormal
Vo l ta g eCondition